PPC_4xx synopsy USB driver

PPC_4xx synopsy USB driver

[Cote, Sylvain]

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Hi,

I am trying the new USB dwc-otg Synopsys driver on my powerpc 405ex board.  I am using the kernel 2.6.30.3 from denx git (head 2.6.30 stable 2009-09-04 snapshot).  Previously I was using the USB driver from 2.6.25 kernel.  The driver was unstable and was only working when I enabled some debug prints.

I am moving to the new kernel to get improvement on that USB driver. However, I have some problems with it.  My problem is that probe function is never called (dwc_otg_driver_probe).  The driver init call is done and I can see the debug print "dwc_otg: version 2.60a 22-NOV-2006" but no more call (n.b. I enabled all debug print).  Initialisation is done in probe function, so, my usb dwc_otg controller is not initialized.  In theory, when module is inserted, init is called (dwc_otg_driver_init).  This init call, register the driver (platform_driver_register) and, in this registration, configured the probe function to call (dwc_otg_driver_probe).  But as I said, probe is never called.

First, in my setup, I want to use USB in host mode.

My usb-otg portion of my dts file is:

USBOTG0: usbotg@ef6c0000 {
                                    compatible = "amcc,usb-otg-405ex", "amcc,usb-otg";
                                    reg = <0xef6c0000 0x10000>;
                                    interrupt-parent = <&USBOTG0>;
                                    interrupts = <0 1 2>;
                                    #interrupt-cells = <1>;
                                    #address-cells = <0>;
                                    #size-cells = <0>;
                                    interrupt-map = </* USB-OTG */ 0 &UIC2 0x1e 4
                                                             /* HIGH-POWER */ 1 &UIC1 0x1a 8
                                                             /* DMA */ 2 &UIC0 0xc 4>;
                                    interrupt-map-mask = <0xffffffff>;
                        };

My USB potion of my kernel config (menuconfig)

Support for host-side USB -> y
USB announce new devices --> y
USB device filesystem --> y
USB device class-devices --> y
USB dynamic USB minor allocation --> y

USB mass storage support --> y

USB gadget support --> y
            Maximum VBUS power usage = 500
            Synopsys DWC OTG controller
            Synopsys DWC OTG internal DMA mode --> y
            USB gadget --> M
            gadget zero --> M
            Ethernet Gadget --> M
            RNDIS support --> y

Any help will be appreciated

Thank you,

Sylvain

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Re: PPC_4xx synopsy USB driver

[Stefan Roese]

Hi Sylvain,

On Friday 18 September 2009 17:50:24 Cote, Sylvain wrote:
> USB gadget support --> y
>             Maximum VBUS power usage = 500
>             Synopsys DWC OTG controller
>             Synopsys DWC OTG internal DMA mode --> y
>             USB gadget --> M
>             gadget zero --> M
>             Ethernet Gadget --> M
>             RNDIS support --> y
> 
> Any help will be appreciated

Looks good so far. I suspect that the only thing missing for your 405EX custom 
board is the following line in the arch/powerpc/sysdev/Makefile:

obj-$(CONFIG_KILAUEA)           += amcc-usbotg.o

to enable the device-tree to platform-device driver wrapper for the USB-OTG 
resources.

Cheers,
Stefan

--
DENX Software Engineering GmbH,      MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich,  Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-0 Fax: (+49)-8142-66989-80 Email: office@denx.de

RE: PPC_4xx synopsy USB driver

[Cote, Sylvain]

Hi Stefan,


On Friday 18 September 2009 17:50:24 Cote, Sylvain wrote:
> USB gadget support --> y
>             Maximum VBUS power usage =3D 500
>             Synopsys DWC OTG controller
>             Synopsys DWC OTG internal DMA mode --> y
>             USB gadget --> M
>             gadget zero --> M
>             Ethernet Gadget --> M
>             RNDIS support --> y
>=20
> Any help will be appreciated

> Looks good so far. I suspect that the only thing missing for your 405EX=20
> custom=20
> board is the following line in the arch/powerpc/sysdev/Makefile:

> obj-$(CONFIG_KILAUEA)           +=3D amcc-usbotg.o

I have created a new platform (platform using 405ex).  I have missed this o=
ne for my new platform.  Do you know if there is a compilation switch that =
could be more generic (like CONFIG_40x) for the usbotg?

> to enable the device-tree to platform-device driver wrapper for the USB-
> OTG=20
> resources.

Thanks you,

Your help has been appreciated.

Sylvain

This electronic message may contain proprietary and confidential informat=
ion of Verint Systems Inc., its affiliates and/or subsidiaries.
The information is intended to be for the use of the individual(s) or
entity(ies) named above.  If you are not the intended recipient (or autho=
rized to receive this e-mail for the intended recipient), you may not use=
, copy, disclose or distribute to anyone this message or any information =
contained in this message.  If you have received this electronic message =
in error, please notify us by replying to this e-mail.
=0D

Re: PPC_4xx synopsy USB driver

[Stefan Roese]

On Monday 21 September 2009 15:44:30 Cote, Sylvain wrote:
> > Looks good so far. I suspect that the only thing missing for your 405EX
> > custom
> > board is the following line in the arch/powerpc/sysdev/Makefile:
> >
> > obj-$(CONFIG_KILAUEA)           += amcc-usbotg.o
> 
> I have created a new platform (platform using 405ex).  I have missed this
>  one for my new platform.  Do you know if there is a compilation switch
>  that could be more generic (like CONFIG_40x) for the usbotg?

Yes, it would probably make sense to just use 

obj-$(CONFIG_USB_DWC_OTG) += amcc-usbotg.o

here. I'll change this soon.

Cheers,
Stefan

--
DENX Software Engineering GmbH,      MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich,  Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-0 Fax: (+49)-8142-66989-80 Email: office@denx.de